package helpers;

import java.nio.charset.Charset;
import java.security.MessageDigest;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.jsoup.Jsoup;

public class StringHelper {
    public static String cutString(String description, int count) {
        String[] str = description.split(" ");
        int max = str.length;
        if (max >= count) {
            max = count;
        }
        description = "";
        
        for (int i = 0; i < max; i++) {
            description += str[i] + " ";
        }
        return description;
    }
    
    public static String getAlias(String str) {
        str = StringHelper.replaceVietnamese(str);
        str = StringHelper.replace(str);
        return str;
    }
    
    public static String replace(String str) {
        str = str.replaceAll("[\\W]+", "-");
        str = str.replaceAll("^-", "");
        str = str.replaceAll("-$", "");
        str = str.toLowerCase();
        return str;
    }

    public static String replaceVietnamese(String str) {
    	String[] aArray = { "ấ", "ầ", "ẩ", "ẫ", "ậ", "Ấ", "Ầ", "Ẩ", "Ẫ", "Ậ",
				"ắ", "ằ", "ẳ", "ẵ", "ặ", "Ắ", "Ằ", "Ẳ", "Ẵ", "Ặ", "á", "à",
				"ả", "ã", "ạ", "â", "ă", "Á", "À", "Ả", "Ã", "Ạ", "Â", "Ă" };
		String[] eArray = { "ế", "ề", "ể", "ễ", "ệ", "Ế", "Ề", "Ể", "Ễ", "Ệ",
				"é", "è", "ẻ", "ẽ", "ẹ", "ê", "É", "È", "Ẻ", "Ẽ", "Ẹ", "Ê" };
		String[] iArray = { "í", "ì", "ỉ", "ĩ", "ị", "Í", "Ì", "Ỉ", "Ĩ", "Ị" };
		String[] oArray = { "ố", "ồ", "ổ", "ỗ", "ộ", "Ố", "Ồ", "Ổ", "Ô", "Ộ",
				"ớ", "ờ", "ở", "ỡ", "ợ", "Ớ", "Ờ", "Ở", "Ỡ", "Ợ", "ó", "ò",
				"ỏ", "õ", "ọ", "ô", "ơ", "Ó", "Ò", "Ỏ", "Õ", "Ọ", "Ô", "Ơ" };
		String[] uArray = { "ứ", "ừ", "ử", "ữ", "ự", "Ứ", "Ừ", "Ử", "Ữ", "Ự",
				"ú", "ù", "ủ", "ũ", "ụ", "ư", "Ú", "Ù", "Ủ", "Ũ", "Ụ", "Ư" };
		String[] yArray = { "ý", "ỳ", "ỷ", "ỹ", "ỵ", "Ý", "Ỳ", "Ỷ", "Ỹ", "Ỵ" };
		String[] dArray = { "đ", "Đ" };
        for (String item : aArray) {
            str = str.replaceAll(item, "a");
        }
        for (String item : eArray) {
            str = str.replaceAll(item, "e");
        }
        for (String item : iArray) {
            str = str.replaceAll(item, "i");
        }
        for (String item : oArray) {
            str = str.replaceAll(item, "o");
        }
        for (String item : uArray) {
            str = str.replaceAll(item, "u");
        }
        for (String item : yArray) {
            str = str.replaceAll(item, "y");
        }
        for (String item : dArray) {
            str = str.replaceAll(item, "d");
        }
        str = str.replaceAll("[\\W]+", " ");
        str = str.replaceAll("^-", "");
        str = str.replaceAll("-$", "");
        str = str.toLowerCase();
        return str;

    }

    public static String tag(String str) {
        str = str.replaceAll("\\#", "Sharp");
        str = str.replaceAll("\\+", "Plus");
        str = str.replaceAll("[^.\\w]+", "-");
        str = str.replaceAll("^-", "");
        str = str.replaceAll("-$", "");
        str = str.toLowerCase();
        return str;
    }

    public static String remove(String str) {
        str = str.replaceAll("[\'\"]+", "&quot;");
        return str;
    }

    public static boolean StringIsNullOrEmpty(String string) {
        if (string == null || string.equals("")) {
            return true;
        }
        return false;
    }
    
    public static ArrayList<String> findString(String regex, String input) {
        ArrayList<String> result = new ArrayList<String>();
        Pattern p = Pattern.compile(regex);
        Matcher m = p.matcher(input); // get a matcher object
         while(m.find()) {
           result.add(input.substring(m.start(), m.end()));
        }
        return result;
    }
    
    public static String html2text(String html) {
        return Jsoup.parse(html).text();
    }
    
    public static String text2UTF8(String str) {
        byte[] utf8bytes = str.getBytes();
        return new String(utf8bytes,Charset.forName("UTF-8"));
    }
    
    public static String arrayToString(String[] a, String separator) {
        if (a == null || separator == null) {
            return null;
        }
        StringBuilder result = new StringBuilder();
        if (a.length > 0) {
            result.append(a[0]);
            for (int i=1; i < a.length; i++) {
                result.append(separator);
                result.append(a[i]);
            }
        }
        return result.toString();
   }
    
  public static String arrayListToString(ArrayList<String> a, String separator) {
      StringBuilder result = new StringBuilder();
      if (a.size() > 0) {
          result.append(a.get(0));
          for (int i = 1; i < a.size(); i++) {
              result.append(separator);
              result.append(a.get(i));
          }
      }
      return result.toString();
  }
  
  public static String listToString(List<String> str, String separator) {
      StringBuilder result = new StringBuilder();
      if (str.size() > 0) {
          result.append(str.get(0));
          for (int i = 1; i < str.size(); i++) {
              result.append(separator);
              result.append(str.get(i));
          }
      }
      return result.toString();
  }
  
  public static List<String> stringToList(String str, String separator) {
	  List<String> lst = new ArrayList<String>();
	  String[] arr = str.split(separator);
	  for (int i = 0; i < arr.length; i++) {
		  if (!lst.contains(arr[i])) {
			  lst.add(arr[i]);
		  }
	  }
	  return lst;
  }
  
  public static String md5(String str) {
	try {
        MessageDigest md = MessageDigest.getInstance("MD5");
        md.update(str.getBytes());

        byte byteData[] = md.digest();

        //convert the byte to hex format method 1
        StringBuffer sb = new StringBuffer();
        for (int i = 0; i < byteData.length; i++) {
           sb.append(Integer.toString((byteData[i] & 0xff) + 0x100, 16).substring(1));
        }
        str = sb.toString();
    } catch (Exception e) {}
    return str;
  }
  
  public static String cleanContent(String str) {
		str = str.replaceAll(
				"(class|id)[ ]*[=]{1}[ ]*[\\'\\\"]{1}[^\\'\\\"]+[\\'\\\"]{1}",
				"");
		str = str.replaceAll("<script[^<]+</script[ ]*>", "");
		return str;
  }
}
